Self-drilling screw clamp

Abstract

The present invention discloses a self-drilling screw clamp, which relates to the field of self-drilling screw tools. The present invention solves the problems that the screw cap of the current self-drilling screw does not firmly hold the self-drilling screw, and it is time-consuming and difficult for construction workers to accurately position. The outer side of the screw cap seat of the self-drilling screw clamp is sequentially sleeved with an inner tube body and an outer tube body from inside to outside; a spring hole for placing a clutch spring is arranged at the port of the inner end of the inner tube body; an outer tube body rack meshing with the outer rack of the inner tube body is arranged on the inner wall of the outer tube body, the outer tube body is sleeved on the inner tube body, and a pressure regulating hole corresponding to the ring shaft groove of the screw cap seat is arranged at the lower part of the outer tube body; a weak spring is sleeved on the screw cap rod. Using the present invention is safe, reliable, time-saving, labor-saving and can achieve accurate positioning.

Description

Technical Field

[0001] The present invention relates to the field of drill tail nail tools, and particularly to a drill tail nail clamp. Background Art

[0002] Currently, the use of drill tail nails is usually installed on a tool with a handle and a U-shaped nail cap seat. A magnet is inlaid in the U-shaped nail cap seat. During use, the tool is installed on a hand drill to complete the construction process. Although this tool has a certain adsorption force on the drill tail nail cap, the control of the drill tail nail by this tool is not firm. When the hand drill rotates at a high speed, since the drill tail nail needs a certain thrust to penetrate the material surface, if the center of gravity is not well controlled and it tilts, the rapidly rotating drill tail nail will fall off, endangering the high-altitude operators. At the same time, the hand drill will also hit the material surface heavily and damage the material surface. Therefore, there are great safety hazards in the current tools for operating drill tail nails.

[0003] The invention patent applications of "Safety protection device for installing external hexagon pad drill tail self-tapping screws" with the application number 201810446495.9 and "Drill tail screw drill" with the application number 201911237405.6 have solved the problem that the drill tail nail is held tightly by the movable claw during drilling, eliminating the safety hazard. However, when the operator uses a hand drill to install each drill tail nail, the sleeve on the drill bit must be pulled backward first, so that the movable claw opens before the drill tail nail can be inserted into the nail cap seat. Each time a drill tail nail is driven, the operation needs to be repeated. Therefore, the structural design of the movable claw not only brings trouble to the operator during construction but also affects the work efficiency. At the same time, since the movable claw is installed in the sleeve through a pin, the pin hole on the movable claw needs a movable space for the movable claw to open and close, resulting in the phenomenon that the movable claw does not hold the drill tail nail firmly, that is, the drill tail nail shakes, and it is difficult for the construction personnel to position, and the drill tail nail cannot be driven to the accurate position. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a drill tail nail clamp that is safe, reliable, time-saving, labor-saving, and can achieve accurate positioning.

[0005] To achieve the above purpose, the present invention provides a drill tail nail clamp, which includes a nail cap seat. A magnet is provided at the inner end of the nail cap seat. The rear end of the nail cap seat is a cylindrical nail cap rod and a rhombic drill chuck column. A nail cap seat rack is provided on the outside of the nail cap seat. A ring shaft groove is provided on the nail cap rod. An end ring groove is provided between the ring shaft groove and the drill chuck column. An end ring is installed in the end ring groove. The diameter of the nail cap seat is larger than that of the nail cap rod. An inner tube body and an outer tube body are sequentially sleeved on the outside of the nail cap seat from the inside out.

[0006] The inner wall of the inner tube body is provided with an inner rack that meshes with the rack of the nail cap seat, and the outer wall of the inner tube body is provided with an outer rack; the inner diameter of the inner tube body is equal to the outer diameter of the nail cap seat, and several block notches are equidistantly arranged on the upper part of the inner tube body, and a snap ring groove is arranged on the inner wall of the upper part of the inner tube body; an inner tube body necking is arranged on the inner wall of the lower part of the inner tube body, and the inner diameter of the inner tube body necking is smaller than the diameter of the nail cap seat and larger than the diameter of the nail cap rod; a linkage pin slot is arranged on the side wall of the inner tube body; a spring hole for placing a clutch spring is arranged on the port at the inner end of the inner tube body;

[0007] The inner wall of the outer tube body is provided with an outer tube body rack that meshes with the outer rack of the inner tube body. The outer tube body is sleeved on the inner tube body. The inner diameter of the middle part of the outer tube body is equal to the inner diameter of the inner tube body necking, and the inner diameter of the lower part of the outer tube body is equal to the outer diameter of the nail cap rod; the outer tube body is provided with a linkage pin hole for placing a linkage pin and corresponding to the linkage pin slot of the inner tube body, and a pressure regulating hole corresponding to the ring shaft groove of the nail cap rod is arranged at the lower part of the outer tube body; a stop head, a strong spring and a pressure regulating screw are sequentially installed in the pressure regulating hole from the inside to the outside. A pressure regulating necking is arranged inside the pressure regulating hole. The stop head is provided with a hemispherical convex head and a circular round plate seat; the inner diameter of the pressure regulating necking inside the pressure regulating hole is smaller than the outer diameter of the round plate seat of the stop head;

[0008] A snap ring is installed in the snap ring groove, and the same number of blocks as the block notches on the inner tube body are sleeved on the snap ring; the outer diameter of the end ring is larger than the inner diameter of the lower part of the outer tube body; a weak spring is sleeved on the nail cap rod.

[0009] Four block notches are equidistantly arranged at the outer end of the inner tube body, and a block is sleeved on the snap ring corresponding to each block notch.

[0010] A block is placed in the block notch. The block is provided with a snap ring hole. The front end of the block is provided with a nail contact surface in contact with the drill tail nail and a head surface in contact with the material surface. The rear end of the block is provided with an outer port support surface in contact with the outer tube body; the length of the head surface is smaller than the radius of the nail cap of the drill tail nail.

[0011] The beneficial effects of the present invention are as follows: The drill tail nail clamp of the present invention is safe, reliable and convenient to install; the block replaces the movable claw, which not only realizes that the drill tail nail is directly inserted onto the nail cap seat in the drill bit, saving time and labor, but also realizes the firmness of the drill tail nail on the nail cap seat, that is, overcomes the problem of the drill tail nail shaking caused by using the movable claw.

[0012] The drill tail nail clamp of the present invention will be further described below with reference to the accompanying drawings. Brief Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the drill tail nail clamp of the present invention in an unoperated state;

[0014] Figure 2It is a schematic structural diagram of the working state of the self-drilling screw clamp of the present invention;

[0015] Figure 3 It is a schematic structural diagram of the nail cap seat of the present invention;

[0016] Figure 4 It is a schematic structural diagram of the inner tube body of the present invention;

[0017] Figure 5 It is a schematic structural diagram of the outer tube body of the present invention;

[0018] Figure 6 It is a schematic structural diagram of the clamping block of the present invention.

[0019] In the figure: 1. Outer tube body, 2. Weak spring, 3. Clutch spring, 4. Inner tube body, 5. Inner tube body necking, 6. Nail cap seat, 7. Spring hole, 8. Clamping block, 9. Stopping head, 10. Ring shaft groove, 11. Linking pin, 12. End ring, 13. Nail cap rod, 14. Drill chuck column, 15. End ring groove, 16. Clamping block notch, 17. Snap ring groove, 18. Snap ring, 19. Linking pin groove, 20. Linking pin hole, 21. Pressure regulating hole, 22. Strong spring, 23. Pressure regulating screw, 24. Pressure regulating necking, 25. Convex head, 26. Round plate seat, 27. Snap ring hole, 28. Self-drilling screw, 29. Clamping surface of nail, 30. End surface of head, 31. Outer port supporting surface, 32. Inner rack, 33. Outer rack, 34. Nail cap seat rack, 35. Outer tube body rack. Specific embodiments

[0020] As Figure 1 , Figure 2 And Figure 3 As shown in

[0021] As Figure 4As shown in the figure, an internal rack 32 meshing with the rack of the nail cap seat 6 is provided on the inner wall of the inner tube body 4, and an external rack 33 is provided on the outer wall of the inner tube body 4. The inner diameter of the inner tube body 4 is equal to the outer diameter of the nail cap seat 6. Four block notches 16 are equidistantly arranged on the upper part of the inner tube body 4, and a snap ring groove 17 is provided on the inner wall of the upper part of the inner tube body 4. A snap ring 18 is installed in the snap ring groove 17; an inner tube body necking 5 is provided on the inner wall of the lower part of the inner tube body 4, and the inner diameter of the inner tube body necking 5 is smaller than the diameter of the nail cap seat 6 and larger than the diameter of the nail cap rod 13; a linkage pin slot 19 is provided on the side wall of the inner tube body 4. A spring hole 7 for placing the clutch spring 3 is provided on the port at the inner end of the inner tube body 4.

[0022] As Figure 5 shown in the figure, an external tube body rack 35 meshing with the external rack 33 of the inner tube body 4 is provided on the inner wall of the external tube body 1. The external tube body 1 is sleeved on the inner tube body 4. The inner diameter of the inner wall of the middle part of the external tube body 1 is equal to the inner diameter of the inner tube body necking 5, and the inner diameter of the inner wall of the lower part of the external tube body 1 is equal to the outer diameter of the nail cap rod 13. The external tube body 1 is provided with a linkage pin hole 20 for placing the linkage pin 11 and corresponding to the linkage pin slot 19 of the inner tube body 4, and a pressure regulating hole 21 corresponding to the ring shaft groove 10 of the nail cap rod 13 is provided at the lower part of the external tube body 1. A stop head 9, a strong spring 22 and a pressure regulating screw 23 are sequentially installed in the pressure regulating hole 21 from the inside to the outside. A pressure regulating necking 24 is provided on the inner side of the pressure regulating hole 21. The stop head 9 is provided with a hemispherical convex head 25 and a circular round plate seat 26; the inner diameter of the pressure regulating necking 24 on the inner side of the pressure regulating hole 21 is smaller than the outer diameter of the round plate seat 26 of the stop head 9.

[0023] As Figure 6 shown in the figure, a block 8 is placed in the block notch 16. A snap ring hole 27 is provided on the block 8. The front end of the block 8 is provided with a nail contact surface 29 contacting the drill tail nail 28 and an end surface 30 contacting the material surface. The rear end of the block 8 is provided with an outer port support surface 31 contacting the external tube body 1; the length of the end surface 30 is smaller than the radius of the nail cap of the drill tail nail 28.

[0024] The working principle of the present invention is as follows: During operation, the self-drilling screw clamp of the present invention is installed on the drill bit of a hand drill. The self-drilling screw 28 is directly inserted into the nail cap seat 6. The outer tube body 1 is pushed upward. At this time, the weak spring 2 and the clutch spring 3 push the inner tube body 4 to slide upward. Under the action of the clutch spring 3, the inner tube body 4 is always in a clutch state with the outer tube body 1. As the outer tube body 1 continues to be pushed upward, the inner tube body closing mouth 5 holds the nail cap seat 6. At the same time, the contraction of the weak spring 2 stops. Subsequently, the clutch spring 3 contracts into the spring hole 7, and the outer tube body 1 holds the inner tube body 4. At this time, the four clamping blocks 8 clamp the self-drilling screw 28 under the thrust of the outer tube body 1. At this time, the stop head 9 enters the ring shaft groove 10. Thus, the installation of the self-drilling screw 28 on the hand drill is completed. The length of the end face 30 on the clamping block 8 is less than the radius of the nail cap of the self-drilling screw 28, so that the scratch generated after the clamping block 8 rotates on the material surface can be covered by the nail cap of the self-drilling screw 28, without affecting the appearance. The nail cap seat rack 34 on the outside of the nail cap seat 6 meshes with the internal rack 32 on the inner wall of the inner tube body 4, enabling the nail cap seat 6 and the inner tube body 4 to move upward or downward; the external rack 33 on the outer wall of the inner tube body 4 meshes with the outer tube body rack 35 on the inner wall of the outer tube body 1, enabling the outer tube body 1 and the inner tube body 4 to also move upward or downward. Therefore, the inner tube body 4, the nail cap seat 6, and the outer tube body 1 are integrated by their respective racks and rotate together.

[0025] During construction, after the self-drilling screw 28 is driven into the material surface, the end face 30 on the clamping block 8 is stressed, causing the outer tube body 1 and the inner tube body 4 to slide backward simultaneously. Subsequently, the stop head 9 is stressed and slides out of the ring shaft groove 10. The weak spring 2 and the clutch spring 3 are released simultaneously. When the clutch spring 3 is released, the inner tube body 4 is separated from the outer tube body 1. As the inner tube body 4 is separated from the outer tube body 1, the four clamping blocks 8 also release the self-drilling screw 28. At this time, the weak spring 2 continues to push the outer tube body 1 outward. The linkage pin 11 on the outer tube body 1 drives the inner tube body 4 to slide backward until the outer tube body 1 slides to the end ring 12 and stops. At this time, the nail cap seat 6 is exposed from the inner tube body 4 and the outer tube body 1, and the next step of directly inserting the self-drilling screw 28 can be continued.

[0026] The self-drilling screw clamp of the present invention uses the clamping block 8 instead of the movable claw, which not only realizes the direct insertion of the self-drilling screw 28 into the drill bit of the hand drill, saving time and labor, but also realizes the firmness of the self-drilling screw 28 in the drill bit, that is, it overcomes the problem of the self-drilling screw 28 shaking in the drill bit caused by using the movable claw.

Claims

1. A self-drilling screw clamp, comprising a nail head seat, a magnet is arranged at the inner end of the nail head seat, the rear end of the nail head seat is a cylindrical nail head rod and a rhombic drill chuck column, and is characterized in that, A nail cap seat rack is provided on the outer side of the nail cap seat. A ring shaft groove is provided on the nail cap rod. A terminal ring groove is provided between the ring shaft groove and the drill chuck column. A terminal ring is installed in the terminal ring groove. The diameter of the nail cap seat is larger than that of the nail cap rod. An inner tube body and an outer tube body are sequentially sleeved on the outer side of the nail cap seat from inside to outside; An inner rack meshing with the nail cap seat rack is provided on the inner wall of the inner tube body. An outer rack is provided on the outer wall of the inner tube body; the inner diameter of the inner tube body is equal to the outer diameter of the nail cap seat. A plurality of block notches are equidistantly provided on the upper part of the inner tube body. A snap ring groove is provided on the inner wall of the upper part of the inner tube body; an inner tube body necking is provided on the inner wall of the lower part of the inner tube body. The inner diameter of the inner tube body necking is smaller than the diameter of the nail cap seat and larger than the diameter of the nail cap rod; a linkage pin groove is provided on the side wall of the inner tube body; a spring hole for placing a clutch spring is provided on the port at the inner end of the inner tube body; An outer tube body rack meshing with the outer rack of the inner tube body is provided on the inner wall of the outer tube body. The outer tube body is sleeved on the inner tube body. The inner diameter of the inner wall in the middle of the outer tube body is equal to the inner diameter of the inner tube body necking. The inner diameter of the inner wall at the lower part of the outer tube body is equal to the outer diameter of the nail cap rod; a linkage pin hole for placing a linkage pin and corresponding to the linkage pin groove of the inner tube body is provided on the outer tube body. A pressure regulating hole corresponding to the ring shaft groove of the nail cap rod is provided at the lower part of the outer tube body; a stop head, a strong spring and a pressure regulating screw are sequentially installed in the pressure regulating hole from inside to outside. A pressure regulating necking is provided on the inner side of the pressure regulating hole. The stop head is provided with a hemispherical convex head and a circular round plate seat; the inner diameter of the pressure regulating necking on the inner side of the pressure regulating hole is smaller than the outer diameter of the round plate seat of the stop head; A snap ring is installed in the snap ring groove. A plurality of blocks equal in number to the block notches on the inner tube body are sleeved on the snap ring; the outer diameter of the terminal ring is larger than the inner diameter of the inner wall at the lower part of the outer tube body; a weak spring is sleeved on the nail cap rod.

2. The self-drilling screw fixture according to claim 1, characterized in that, Four block notches are equidistantly provided at the outer end of the inner tube body. A block is sleeved on the snap ring corresponding to each block notch respectively.

3. The drill point rivet fixture according to claim 1, characterized in that, A block is placed in the block notch. A snap ring hole is provided on the block. A nail contacting surface contacting with the drill tail nail and a head surface contacting with the material surface are provided at the front end of the block. An outer port supporting surface contacting with the outer tube body is provided at the rear end of the block; the length of the head surface is smaller than the radius of the nail cap of the drill tail nail.

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